Automatic center cavity equalizing valve

Details Automatic center cavity equalizing valve Automatic center cavity equalizing valve

1995-09-26

2000-01-25

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137599, 251175, 251327, F16K 316

Patent

active

060168269

ABSTRACT:
An automatic center cavity equalizing valve for equalizing pressure in a main valve. The equalizing valve includes a body with a bore for providing fluid communication between an upstream port and a center cavity port, and a downstream port and the center cavity port. A metal ball is disposed within the bore and is arranged to mate with upstream and downstream seats to seal communication with the upstream or downstream port and the center cavity port depending upon the differential pressure across valve. The metal ball is spring biased against the downstream seat to prevent damage to the downstream seat due to rattling. In addition, access plugs are provided at opposite ends of the bore to allow for access to the interior of the bore for repairing or replacing the metal ball, the seats, and/or other internal components.

REFERENCES:
patent: 2358228 (1944-09-01), Hoof
patent: 2371293 (1945-03-01), Hoof
patent: 2608986 (1952-09-01), Stephens
patent: 3123090 (1964-03-01), Bredtschneider
patent: 3130742 (1964-04-01), Bredtschneider
patent: 3664362 (1972-05-01), Weise

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